inletvalue and value in inletoutlet BC

immortality · November 23, 2012, 06:50

what are inletvalue and value must be assigned for inletoutlet or outletinlet BCs?if inletvalue is velocity whats value?

chegdan · November 23, 2012, 07:48

value is just a default value that will be changed at runtime and calculated.
inletValue is the value of the velocity when the flux is negative at the outlet, i.e. inflow.

immortality · November 23, 2012, 09:15

then value isn't important and relates to inner calculations of openfoam?could it be set as (0 0 0) for convenience?

chegdan · November 23, 2012, 09:55

yes, you can set it to

Code:

value uniform (0 0 0);

for examples, you can search in the tutorials directory with

Code:

grep -R "inletOutlet" .

immortality · November 23, 2012, 18:18

thank you dan.whats about calculated BC?as instance density in perfect gas solutions can be set as calculated?if we dont set it so how can we draw its field with paraview after solve?
And If we determine a value in this kind of BC it has any effect?
Thank you again so much.

November 23, 2012, 06:50	inletvalue and value in inletoutlet BC	#1
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	what are inletvalue and value must be assigned for inletoutlet or outletinlet BCs?if inletvalue is velocity whats value?

November 23, 2012, 09:55		#4
chegdan Senior Member Daniel P. Combest Join Date: Mar 2009 Location: St. Louis, USA Posts: 621 Rep Power: 0	yes, you can set it to Code: value uniform (0 0 0); for examples, you can search in the tutorials directory with Code: grep -R "inletOutlet" .

November 23, 2012, 07:48		#2
chegdan Senior Member Daniel P. Combest Join Date: Mar 2009 Location: St. Louis, USA Posts: 621 Rep Power: 0	value is just a default value that will be changed at runtime and calculated. inletValue is the value of the velocity when the flux is negative at the outlet, i.e. inflow.

November 23, 2012, 09:15		#3
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	then value isn't important and relates to inner calculations of openfoam?could it be set as (0 0 0) for convenience?

November 23, 2012, 18:18		#5
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	thank you dan.whats about calculated BC?as instance density in perfect gas solutions can be set as calculated?if we dont set it so how can we draw its field with paraview after solve? And If we determine a value in this kind of BC it has any effect? Thank you again so much.